AP1000与二代核电蒸汽发生器换热特性对比研究  

Comparative researches on the heat transfer characteristics of the SG between AP1000 and 2rd generation nuclear power plant

作　　者：李宇[1,2] 周涛[1,2] 刘亮[1,2] 方晓璐[1,2] 

机构地区：[1]华北电力大学核热工安全与标准化研究所,北京102206 [2]北京市非能动技术重点实验室,北京102206

出　　处：《华电技术》2015年第10期69-71,75,共4页HUADIAN TECHNOLOGY

基　　金：中国核动力研究设计院(2012-413)资助

摘　　要：为研究AP1000的换热系数,分别计算了AP1000、大亚湾核电和秦山核电一期机组蒸汽发生器的总换热系数、一回路热阻、管壁热阻、污垢热阻以及二回路热阻并进行了对比分析,分析结果表明:AP1000蒸汽发生器总的换热系数为8978W/(m2·℃),略大于大亚湾核电,远大于秦山核电一期;同时,AP1000二回路热阻最小,而一回路热阻、管壁热阻以及污垢热阻基本与大亚湾核电持平,且均优于秦山核电一期;管壁热阻的阻值占总热阻的50%左右,减小管壁热阻可有效提高蒸汽发生器的换热性能。从总体上看,AP1000蒸汽发生器各部分设置较为合理,其换热特性较二代核电蒸汽发生器有所提高。By calculating the thermal resistance of the primary loop,the secondaryloop,the tube wall,the fouling resistance,the heat transfer coefficient ofsteam generators for AP1000,the Daya Bay Nuclear Power Plant and Qinshan Nuclear Power Plantare calculatedand the results are analyzed by comparing with each other.The data shows thatthe heat transfer coefficient of the AP1000 steam generator is 8 978 W/(m^2 ·℃),which is slightly larger than that of the Daya Bay' s and Qinshan' s.Meanwhile,the secondary loop of AP1000 SG has the minimum thermal resistance of the three,but the thermal resistance of the primary loop,fouling resistance and thermal resistance values of the wall tube are basically equal to those of Daya Bay,and both are superior to the corresponding values of Qinshan.The heat resistance of the tube wall account for more than 50%of the general heat resistance.Overall,the designs of each part of AP1000 steam generator are more reasonable,compared to the second generation of the steam generator,which improves its heat transfer characteristics.

关 键 词：AP1000 蒸汽发生器 换热系数 热阻 

分 类 号：TL353.13[核科学技术—核技术及应用]